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Fold some common code.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@28124 91177308-0d34-0410-b5e6-96231b3b80d8
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@ -1049,8 +1049,9 @@ SDOperand DAGCombiner::SimplifyBinOpWithSameOpcodeHands(SDNode *N) {
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// fold (OP (zext x), (zext y)) -> (zext (OP x, y))
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// fold (OP (sext x), (sext y)) -> (sext (OP x, y))
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// fold (OP (aext x), (aext y)) -> (aext (OP x, y))
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// fold (OP (trunc x), (trunc y)) -> (trunc (OP x, y))
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if ((N0.getOpcode() == ISD::ZERO_EXTEND || N0.getOpcode() == ISD::ANY_EXTEND||
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N0.getOpcode() == ISD::SIGN_EXTEND) &&
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N0.getOpcode() == ISD::SIGN_EXTEND || N0.getOpcode() == ISD::TRUNCATE) &&
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N0.getOperand(0).getValueType() == N1.getOperand(0).getValueType()) {
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SDOperand ORNode = DAG.getNode(N->getOpcode(),
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N0.getOperand(0).getValueType(),
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@ -1059,19 +1060,6 @@ SDOperand DAGCombiner::SimplifyBinOpWithSameOpcodeHands(SDNode *N) {
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return DAG.getNode(N0.getOpcode(), VT, ORNode);
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}
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// fold (and (trunc x), (trunc y)) -> (trunc (and x, y))
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// fold (or (trunc x), (trunc y)) -> (trunc (or x, y))
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// fold (xor (trunc x), (trunc y)) -> (trunc (xor x, y))
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if (N0.getOpcode() == ISD::TRUNCATE &&
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N0.getOperand(0).getValueType() == N1.getOperand(0).getValueType()) {
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SDOperand ORNode = DAG.getNode(N->getOpcode(),
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N0.getOperand(0).getValueType(),
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N0.getOperand(0), N1.getOperand(0));
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AddToWorkList(ORNode.Val);
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return DAG.getNode(ISD::TRUNCATE, VT, ORNode);
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}
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// For each of OP in SHL/SRL/SRA/AND...
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// fold (and (OP x, z), (OP y, z)) -> (OP (and x, y), z)
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// fold (or (OP x, z), (OP y, z)) -> (OP (or x, y), z)
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